<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        #shop-car li {
            border: 1px dotted red;
            margin: 20px 0;
            padding: 20px;
        }

        .container {
            width: 400px;
            padding: 20px;
        }
    </style>
</head>

<body>

    <div class="container">
        <ul id="shop-car">
            <!-- <li>
                <input type="checkbox" />
                <div>商品名称:</div>
                <img src="https://img12.360buyimg.com/n0/s80x80_jfs/t1/118064/27/12885/59959/5f17b7efE453f688d/5b33ac76b2aaea9b.jpg"
                    alt="">
                <div>商品价格:50</div>
                <div>购买数量:30</div>
                <div>商品规格: 黑</div>
                <div>是否选中：选中吧OR不选中</div>
            </li> -->
        </ul>
        <p id="totalnum">总数量：xxx</p>
    </div>

</body>

</html>
<script>
    let products = [
        {
            goods_name: '小米10-1',
            goods_img: 'https://img12.360buyimg.com/n0/s80x80_jfs/t1/118064/27/12885/59959/5f17b7efE453f688d/5b33ac76b2aaea9b.jpg',
            goods_price: '500',
            goods_attr: '砂石黑4GB+64GB',
            goods_num: 10,
            goods_is_checked: true
        },
        {
            goods_name: '小米10-2',
            goods_img: 'https://img12.360buyimg.com/n0/s80x80_jfs/t1/118064/27/12885/59959/5f17b7efE453f688d/5b33ac76b2aaea9b.jpg',
            goods_price: '510',
            goods_attr: '砂石黑4GB+64GB',
            goods_num: 50,
            goods_is_checked: false
        }
    ]
    //渲染页面
    const renderPage = () => {
        let ul = document.querySelector("#shop-car");
       const dom= products.map(function (item, index) {
            return `
            <li>
                <input type="checkbox"  ${item.goods_is_checked ? "checked" : ""}/>
                <div>商品名称:${item.goods_name}</div>
                <img src="${item.goods_img}" alt="">
                <div>商品价格:${item.goods_price}</div>
                <div>购买数量:${item.goods_num}</div>
                <div>商品规格: ${item.goods_attr}</div>
                <div class="check">是否选中：${item.goods_is_checked ? "选中" : "不选中"}</div>
            </li>
        `   
        })
        console.log(dom)
        ul.innerHTML=dom
        let inp = document.querySelectorAll("input");
        inp.forEach((i,index)=>{
        i.onclick=()=>{
            products[index].goods_is_checked = i.checked;
            renderPage();
        }
    })
    }
    renderPage();
    let p = document.querySelector("#totalnum");
    let check = document.querySelectorAll(".check");
    
    // for (let i = 0; i < inp.length; i++) {
    //     inp[i].onclick = () => {
    //         console.log(i)
    //         products[i].goods_is_checked = !products[i].goods_is_checked;
    //         ul.innerHTML = "";
    //         renderPage();
    //     }
    // }
 
    // products.forEach(function (item, index) {
    //     if(item.goods_is_checked == true){
    //         let sum = 0;
    //         sum += parseFloat(item.goods_num);
    //         p.innerHTML = "总数量：" + sum ;
    //     }
    // });

</script>